Focus stacking
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At f/11, the DOF in this image of a Wolf Spider is very limited.
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Focus stacking is a digital image processing technique which combines multiple images taken at different focus distances to give a resulting image with a greater depth of field than any of the individual source images.
Getting sufficient depth of field can be particularly challenging in macro photography. The images at right illustrate the increase in DOF that can be achieved by combining multiple exposures.
Other digital imaging techniques used to increase DOF include wavefront coding and plenoptic cameras.
Software
| Name | Primary author | Platform | Open source? |
|---|---|---|---|
| CombineZM | Alan Hadley | Windows | Yes, GPL |
| Helicon Focus | Danylo Kozub | Windows, OSX | No, proprietary, 30-day trial |
| Extended Depth of Field plugin for ImageJ |
Alex Prudencio | Multi-platform (Java) | No, "free to use this software for research purposes" |
| PhotoAcute Studio | Almalence Inc | Windows, Mac OS X, Linux | No, proprietary, time-unlimited trial |
| Stack
Focuser plugin for ImageJ |
Michael Umorin | Multi-platform (Java) | Yes, GPL |
See also
External links
- online article by Rik Littlefield.
- Link directory Focus stacking (Extended Depth of Field).
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